Solar-Powered NB-IoT Temperature & Humidity Sensor for Outdoor Monitoring
The Dragino S31B-NS is a professional NB-IoT outdoor temperature and humidity sensor designed for long-term environmental monitoring in remote and outdoor locations. It measures ambient temperature and relative humidity with high accuracy and uploads the data to IoT platforms through NB-IoT cellular networks.
The sensor uses the reliable Sensirion SHT31 digital temperature and humidity sensor, which is fully calibrated, linearized and temperature compensated for excellent long-term stability. The sensing element is placed inside a waterproof anti-condensation casing, making it suitable for outdoor and demanding field installations.
The S31B-NS supports multiple uplink protocols including MQTT, MQTTs, TCP and UDP, enabling flexible integration with different IoT servers, monitoring platforms and cloud applications. It also supports BLE configuration and OTA firmware updates for easier deployment and maintenance.
Unlike the battery-only S31B-NB version, the S31B-NS is powered by a solar panel and Li-ion battery, making it ideal for long-term outdoor deployments where frequent battery replacement is not desired. It is suitable for smart agriculture, greenhouses, weather monitoring, logistics, industrial monitoring and smart building applications.
With its IP66 waterproof enclosure, low-power design and NB-IoT connectivity, the S31B-NS provides a robust solution for remote environmental monitoring over cellular IoT networks.
Key Features
✔ NB-IoT Temperature & Humidity Sensor
✔ Solar Panel + Li-ion Battery Power Supply
✔ High Accuracy Sensirion SHT31 Sensor
✔ Outdoor Industrial Design
✔ Temperature & Humidity Alarm
✔ BLE Remote Configuration
✔ OTA Firmware Upgrade
✔ MQTT / MQTTs / TCP / UDP Uplink
✔ Ultra-Low Power Consumption
✔ IP66 Waterproof Enclosure
✔ Multi-Sampling & One Uplink Support
✔ Ideal for Outdoor IoT Monitoring
Typical Specifications
• Wireless Technology: NB-IoT
• NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @ H-FDD
• NB-IoT Module: BC660K-GL
• Temperature Sensor: Sensirion SHT31
• Humidity Sensor: Sensirion SHT31
• Power Supply: Solar Panel + Li-ion Battery
• Uplink Protocols: MQTT / MQTTs / TCP / UDP
• BLE Configuration
• OTA Firmware Upgrade
• IP66 Waterproof Enclosure
• Temperature & Humidity Alarm
• Multi-Sampling and One Uplink
Applications
Smart Agriculture
Greenhouses
Weather Monitoring
Cold Chain Monitoring
Logistics
Industrial Monitoring
Smart Buildings
Environmental Monitoring
IoT Remote Monitoring
Product Downloads
- Model: S31B-NS
- Wireless: NB-IoT
- Module: BC660K-GL
- NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @ H-FDD
- Temperature Sensor: Sensirion SHT31
- Temperature Range: -40°C ~ +80°C
- Temperature Accuracy: ±0.2°C
- Humidity Range: 0 ~ 99.9% RH
- Humidity Accuracy: ±2% RH
- Power Supply: Solar Panel + Li-ion Battery
- Protocols: MQTT / MQTTs / TCP / UDP
- Protection: IP66















